The tower defense game specialist Prophetic Sky today announced Knights vs Aliens, a strategy game for the iPhone and iPod touch. Here is more info on this upcoming iPhone game:

Branded as a 'Micro Strategy Game', Knights vs Aliens takes the typical Real-Time-Strategy and boiled it down to its simplest and most fun elements.

Set in medieval europe, the game pits you - as one of 6 playable nations - against invading aliens. You must capture towers with your knights, and fight back the menacing horde. The game has 30 maps and 3 difficulty levels. Combined we estimate upwards of 18 hours of gameplay! Where else can you play as a Knight fighting against Aliens for so long?

Here are some highlights of the game:

- CONTROL your troops with potentially OBSCENE finger gestures- DEFEND EARTH as one of five ANGRY European Nations- NOT HAPPY with FIVE? Play as USA, the secret TIME TRAVELING nation- MIND CONTROL one EVIL Alien nation and CONQUER earth yourself- KICK ALIEN BOOTY on up to THIRTY maps and THREE difficulty modes- ADVANCED graphics with SEXY LENS FLARES - REACT FEARLESSLY as foes attack unseen in the NIGHT- LEVEL UP YOUR MIND with EXTREME historical accuracy- BEARS!